Dust collector with an inbuilt cyclonic water filter

ABSTRACT

The present invention provides a dust collector with an inbuilt cyclonic water filter, which comprises a dust collecting unit, a water filter and a fan. Said dust collector further comprises an incoming air passage and an outgoing air passage. The outlet of said incoming air passage is connected to the inlet of said water filter, the outlet of said water filter opens into the inlet of said outgoing air passage, said incoming and outgoing air passages are separate from each other. With a water filter inbuilt, the dust-containing air enters the dust collecting unit via the incoming air passage at a tangent. The air flow in the dust collecting unit is whirled downwards into the water of the water filter. The dust contained in the air is wet and left in the water, while the purified air is discharged out of the dust collector. The dust collector of the present invention has good working effect. Besides, the air discharged is clean, no pollution is caused, which will be good for environment protection.

BACKGROUND OF THE INVENTION

[0001] 1. Technical Field

[0002] This invention relates to a dust collector, and more particularly, to a dust collector with an inbuilt cyclonic water filter.

[0003] 2. Background of the Invention

[0004] A conventional dust collector usually filtrates dust with a cotton filter bag. Dust and air are sucked in the cotton bag, wherein larger dusts are left in the dust collect box, tiny dusts and air are discharged by the fan and returned indoors. Thus, it is easy to cause secondary pollution, and dust will enter into human lungs easily, doing harm to human health. When dust is dumped, it flies everywhere, and becomes new pollution sources.

SUMMARY OF THE INVENTION

[0005] The main object of the present invention is to provide a dust collector with an inbuilt cyclonic water filter, so as to absorb dust and purify the air.

[0006] The dust collector according to the present invention comprises a dust collecting unit, a water filter and a fan. Said dust collector further comprises an incoming air passage and an outgoing air passage. The outlet of said incoming air passage is connected to the inlet of said water filter, the outlet of said water filter opens into the inlet of said outgoing air passage, said incoming and outgoing air passages are separate from each other.

[0007] With a water filter inbuilt, the dust-containing air enters the dust collecting unit via the incoming air passage at a tangent. The air flow in the dust collecting unit is whirled downwards into the water of the water filter. The dust-containing air is sucked into the water by negative pressure, generates air bubbles and is mixed with water. The dust contained in the air is wet and left in the water, while the purified air is discharged out of the dust collector. After working with the dust collector, the dust can be cleared by throwing the dirty water inside the water filter. The dust collector of the present invention has good working effect. Besides, the air discharged is clean, no pollution is caused, which will be good for environment protection.

BRIEF DESCRIPTION OF THE DRAWINGS

[0008]FIG. 1 is a schematic view of the dust collector according to the present invention;

[0009]FIG. 2 is a schematic view illustrating the assembly of the dust collecting unit and the water filter of the dust collector shown in FIG. 1;

[0010]FIG. 3 is an explosive view of FIG. 2.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] As shown in FIG. 1, the dust collector of the present invention comprises a dust collecting unit 1, a water filter 2 and a fan 3. Inside the dust collector, the outlet 101 of the incoming air passage 10 is connected to the inlet 20 of the water filter 2, the outlet 21 of the water filter 2 is connected to the inlet 111 of the outgoing air passage 11, said incoming air passage 10 and outgoing air passage 11 are separate from each other.

[0012] As shown in FIG. 2 and FIG. 3, the dust collecting unit 1 is a cup-shaped unit with a cylindrical body installed centrally. The cavity between the outer shell of said cup-shaped unit and the outer wall of said cylindrical body constructs the incoming air passage 10 of said dust collecting unit 1. The inner cavity of said cylindrical body constructs the outgoing air passage 11 of said dust collecting unit 1. The inlet 100 of the incoming air passage 10 is installed on the outer wall of said cup-shaped unit, and is connected to the dust passage 4 of the dust collector. The outlet 101 of the incoming air passage 10 is connected to the inlet 20 of the water filter 2, the outlet 21 of the water filter 2 opens into the inlet 111 of the outgoing air passage 11, the outlet 112 of the outgoing air passage 11 is separated from the incoming air passage 10, protrudes from the outer wall of the cup-shaped unit and is connected to the air flow passage 5 of the dust collector.

[0013] The bottom of the dust collecting unit 1 is in the shape of a tilted and curved surface, at the bottom tip of which, the outlet 101 of the incoming air passage 10 enters into the water of the filter bowl 23 via the inlet 20 of the water filter 2.

[0014] The dust collecting unit 1 may alternately be formed by connecting the cup body 13 and the upper lid 12 via screw, with rubber gasket 15 sealed in between. The cup body 13 is matched with the upper lid 12, which makes the outgoing air passage 11 at the central position of the cup-shaped unit.

[0015] The water filter 2 comprises a breakwater 22 and a filter bowl 23. The breakwater 22 and the filter bowl 23 are matched with each other. A cut opening is made at one side of the breakwater 22, which is the inlet 20 of the water filter. At the other side of the breakwater 22, through holes are made, which are the outlets 21 of the water filter.

[0016] The filter bowl 23 is in the shape of a semi-sphere.

[0017] The filter net of the breakwater 22 is secured to the plastic part by over-molding. The whole breakwater 22 is positioned with the aim of the bottom part of the cylindrical cup body 13 and the four pieces of reinforces of the filter bowl 23. The central part of the breakwater 22 is in the shaped of a ringent trump, so as to block the writhing water sprays effectively. The air returned enters the top space of the cup body 13 via the outlet 21 at the brim of the breakwater 22.

[0018] The dust-containing air enters the transparent semi-sphere cup body 13 via the inlet at a tangent, and generates high speed turbulence. Since the air flow is of very high speed, static electricity generates due to the friction between the air flow and the inner wall. Thereby, some tiny dusts are absorbed and left on the inner wall of the cup body. Large dusts change from large particles to small ones along the curved surface, enter the water of the filter bowl 23 by high speed air flow. Thus, bubbles and sprays arise, dusts and water are mixed. Because of the function of inertia, large dusts deposit to the bottom of the water along the curved surface. Small dusts writhe along with the bubbles, hit the surface of the trump-shaped breakwater 22 and return to the water, and thus dilute more thoroughly. The few dusts taken to the filter net of the breakwater 22 by bubbles are broken by the small filter holes, thus, the contact area between the dust-containing air and the water is increased. The purified air enters the space constructed by the breakwater 22 and the tilted surface of the cup body 13, passes the outlet of the cup body 13 and that of the upper lid 12 via the filter net, and finally is discharged and returned indoors through the fan. 

What is claimed is:
 1. A dust collector with an inbuilt cyclonic water filter comprises a dust collecting unit, a water filter and a fan; said dust collector further comprises an incoming air passage and an outgoing air passage; the outlet of said incoming air passage is connected to the inlet of said water filter, the outlet of said water filter opens into the inlet of the outgoing air passage, said incoming and outgoing air passages are separate from each other.
 2. A dust collector according to claim 1, wherein, said dust collecting unit is a cup-shaped unit with a cylindrical body installed centrally; said incoming air passage of said dust collecting unit is constructed by the cavity between the outer shell of said cup-shaped unit and the outer wall of said cylindrical body; said outgoing air passage of said dust collecting unit is constructed by the inner cavity of said cylindrical body; the inlet of said incoming air passage is installed on the outer wall of said cup-shaped unit, and is connected to the dust passage of the dust collector; the outlet of said incoming air passage opens into the inlet of the water filter, the outlet of the water filter opens into the inlet of the outgoing air passage, the outlet of the outgoing air passage is separated from the incoming air passage, protrudes from the outer wall of the cup-shaped unit and is connected to the air flow passage of the dust collector.
 3. A dust collector according to claim 1, wherein, said water filter comprises a breakwater and a filter bowl; said breakwater and the filter bowl are matched with each other; a cut opening is made at one side of the breakwater, which is the inlet of the water filter; at the other side of the breakwater, through holes are made, which are the outlets of the water filter.
 4. A dust collector according to claim 1, wherein, the bottom of the dust collecting unit is in the shape of a tilted and curved surface, at the bottom tip of which, the outlet of the incoming air passage enters into the water of the filter bowl via the inlet of the water filter.
 5. A dust collector according to claim 1, wherein, said filter bowl is in the shape of a semi-sphere.
 6. A dust collector according to claim 1, wherein, said dust collecting unit is formed by connecting the cup body and the upper lid via screw, with rubber gasket sealed in between; said cup body is matched with the upper lid, which makes the outgoing air passage at the central position of the cup-shaped unit.
 7. A dust collector according to claim 1, wherein, the filter net of the breakwater is secured to the plastic part by over-molding; the whole breakwater is positioned with the aim of the bottom part of the cylindrical cup body and the four pieces of reinforces of the filter bowl; the central part of the breakwater is in the shaped of a ringent trump; the air returned enters the top space of the cup body via the outlet at the brim of the breakwater. 